Pipe-coupling gasket.



PIPE 0013mm GASKET. APPLICATION FILED AUILM, 1908.

1,083,,350 fatented Jan. 6, 1914.

Al iii 7 zA fi/aul VENTOR jaw/Q WITNESSES:

' age even after the E ABD DAVZS, o ema ne s aas su s cursri aousnaaria" am & STEAM coUrLErZ COMPANY, on ST. Louis, MISSOURI, A oonroaarzoar or irrssounr.

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To all whom it may concern:

Be it known that I, EDWARD W. DAVIS, a citizen of the United States, residing at Hollis, in the county of Queens and State of New York, have invented new and useful Improvements in Pipe-Coupling Gaskets, of

the train pipe lines which carry air, steam and the like through the train.

Especially as to the train brake pipe, ;it

is of prime importance that fluid tight jointsbe formed at the pipe couplings so as to prevent leakage. of fluid under pressure and accordingly the principal object of my invention is to provide an improved form of gasket or packing ring for the coupling which is adapted to effectually prevent leakconsiderably.

In the accompanying drawing, Figure 1 is a central sectional view of a standard handbperated pipe coupling head, showingone form of my improved gasket or packing ring applied thereto; Fig. 2 a side view of the gasket, partly broken away, so as to show the cross sectional contour thereof; and Figs. 3 and 4 a plan and transverse section respectively, showing a modified form of gasket.

Though adapted to be applied to automatic and other pipe couplings generally, I have. shown theimproved gasket mounted in a hand operated pipe coupling head 1 of the ordinary standardconstruct-ion having a laterally opening fluid passage 2, at the mouth of which the head is provided with the usual circumferential groove or recess 8. A gasket or packing ring of flexible rubber or other material is sprung or forced into the groove 8, the face of the gasket being adapted to contact with the face of a gasket in a. counterpart coupling head, upon coupling the heads together.

According to my improvement, a gasket 5 Specification of Letters Patent. Application filed August 14, 1908. Serial No. 448,475.

gasket has worn down PIPE-COUPLING GASKET.

Patented Jane, 1914..

is provided which may be similar to the prdinary gasket in general contour, as shown in Fig. 2, but lnteriorly the gasket is provided with a circumferential groove or recess 6, preferably located about in-line with the intersection ofthe gasket flange 7 with the body portion thereof. The groove or recess 6 may be 'of any suitable cross sectional shape, such as V shape as shown in Figs. 1 and 2, or U shape as shown in Figs. 3 and 4. The gasket so constructed is inserted in the groove 8 of the coupling head, as shown in Fig. 1, and uponcoupling the head to a counterpart head the meeting face of the gasket contacts with the face of the companion gasket. Upon-supplying fluid underpressure to the train .line pipe, the same exerts its pressure in the groove or recess 6, and tends to force or press the outer lips of the gasket into tight engagement with the companion gasket. The fluid pressure thus firmly holds the gaskets incontact, and it has been found in practice, that the gasket faces may be considerably worn and still the ordinary gasket after the" same wears down the liability to leakage is greatly in creased and it soon becomes necessary to apply new gaskets. of the gasket may be formed with a series of concentric :Circular grooves 9 making ridges or ribs 10 between the same which being firmly clamped againstthe metalface of the seat or groove in the coupling=head makes a tight joint and age around the gasket' It will be apparentthat gaskets embodyprevents any leaking my improvements may be produced- 'a fluid tight joint is maintained, while with" The under or inner face without addittoiial expense in the manufacture while posse sing a considerably increased life and e ciency against leakage.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is

Ina pipe coupling the combination with a coupling head or half section provided with a lateral opening in its'" face and a groove surrounding the same, of a cylindrical packing ring having a flange fitting sa id groov and-provided with an interior circumferential re'oesg sure of the fluid passmg through said opening, and with grooves 5 308 f El r In testimony whereof I have hereunto set sli'bject to the presmy hand.

' EDWARDW. DAVIS.

Witnesses:

R. F. EMERY; A. M. CLEMENTB.

and ribspn its inner face of the coupling 

